New polyacetylenes from Bidens procera .

A phytochemical investigation of Bidens procera L.C.Xu ex X.W.Zheng afforded two novel polyacetylenes, tridecane-2 E -monoene-4,6,8-triyntylen-1,13-diol-12- O - β -glucoside ( 1 ) and tetradecane-2 E ,8 E -diene-4,6-diyne-1,14-diol-13- O - β -glucoside ( 2 ), together with ten known compounds ( 3 - 12 ). Their chemical structures were elucidated by NMR and MS spectrums as well as the comparison of the published data. Furthermore, the chemotaxonomy of the yielded compounds was also discussed.